IMAQ Convert ROI to Annulus VI

LabView NI Vision

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IMAQ Convert ROI to Annulus VI

Owning Palette: Region of Interest ConversionInstalled With: NI Vision Development Module

Converts an ROI Descriptor to an annulus.

IMAQ Convert ROI to Annulus

ROI Descriptor is the descriptor that defines an annulus.

Global Rectangle is the minimum rectangle required to contain all of the contours in the ROI.

Contours are each of the individual shapes that define an ROI.

	ID refers to whether the contour is the external or internal edge of an ROI.
	Type is the shape type of the contour.
	Coordinates indicates the relative position of the contour.

error in (no error) describes the error status before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.

	status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
	code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
	source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

Annulus specifies the coordinates of an annular region of interest in an image.

	Center X specifies the x-coordinate of the center of the circle or annulus.
	Center Y specifies the y-coordinate of the center of the circle or annulus.
	Inner Radius is the radius (in pixels) of the inner circle defining one edge of the circular strip.
	Outer Radius is the radius (in pixels) of the outer circle defining the second edge of the circular strip.
	Start Angle is the first angle of the circular strip. The angle is measured counterclockwise from the x-axis of a coordinate system centered on the center of the circle or annulus.
	End Angle is the second angle of the circular strip. The angle is measured counterclockwise from the x-axis of a coordinate system centered on the center of the circle or annulus.

error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.

	status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
	code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
	source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

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